sonics.com VS.

seattleultrasonics.com

The C-200 is the world’s first ultrasonic chef’s knife, designed specifically for home cooks. You can’t see the blade move, you can’t hear it when it’s on, and you can’t feel any vibration in the handle. But when you press the orange button, the knife cuts with up to 50% less effort, with less sticking, and easier cleanup. When it’s on, the blade vibrates over 30,000 times a second, making the knife behave sharper than it physically is. Made from Japanese AUS-10 steel hardened to 60HRC, it’s a great knife when it’s off, too. Specifications: Blade length: 200mm (8") Steel: Japanese AUS-10 in three layer (san mai) construction. Hardness: 60HRC  Edge angle: 13 degrees per side (26 degrees inclusive) Battery: 1100mAh removable lithium-ion battery pack Charging: USB-C, or with the Wireless Charging Tile Water resistance: IP65 Operating frequency: 33kHz Operating power: 10W Includes: C-200 Ultrasonic Knife, removable Li-ion battery pack, user manual To avoid e-waste, USB-C cable and charger not included.